Virginia, with 13 electoral votes, is a bit more electorally potent than Colorado; Obama could afford to lose either New Hampshire or New Mexico if he won there (though not both), which is not true about the Rocky Mountain state. We are currently projecting Obama to win every John Kerry state, except New Hampshire, but plus Iowa, by double digits. If Obama wins all of those states plus Virginia, he’s at 268 electoral votes, meaning that any more electoral votes anywhere in the country would win him the election.

Nate Silver is the founder and editor in chief of FiveThirtyEight. @natesilver538